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 ###Instrução: Qual circuito foi a corrida onde Hideki Mutoh teve a volta mais rápida?
 ###Tabelas: CREATE TABLE ladies_european_tour_wins_6 (ladies_european_tour_wins_6_id AUTO_INCREMENT PRIMARY KEY, No. INT, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, To par VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR, Winners share ( € ) INT) CREATE TABLE season_1 (season_1_id AUTO_INCREMENT PRIMARY KEY, Number of episode INT, Number of season INT, Title (original) VARCHAR, Title (English) VARCHAR, Original air date VARCHAR) CREATE TABLE race_calendar_and_results (race_calendar_and_results_id AUTO_INCREMENT PRIMARY KEY, Round INT, Circuit VARCHAR, Date VARCHAR, Pole Position VARCHAR, Fastest Lap VARCHAR, Winning Driver VARCHAR, Winning Team VARCHAR) CREATE TABLE summary_of_qualification (summary_of_qualification_id AUTO_INCREMENT PRIMARY KEY, Confederation VARCHAR, Teams started VARCHAR, Teams that have secured qualification VARCHAR, Teams that can still qualify VARCHAR, Teams that have been eliminated VARCHAR, Remaining places in finals VARCHAR, Total places in finals VARCHAR, Qualifying start date VARCHAR, Qualifying end date VARCHAR) CREATE TABLE pool_4 (pool_4_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Tries for VARCHAR, Tries against VARCHAR, Try diff VARCHAR, Points for VARCHAR, Points against VARCHAR, Points diff VARCHAR)  
SELECT Circuit FROM race_calendar_and_results WHERE Fastest Lap = Hideki Mutoh